Ryerson Tull appoints director
The Board of Directors of Ryerson Tull Inc. has appointed Dennis J. Keller to the company's board of directors.
Keller is chairman of the board of DeVry Inc. and DeVry University Inc. DeVry Inc. is the holding company for DeVry University, Ross University, Deaconess College of Nursing, and Becker Professional Review, which together serve approximately 100,000 students in more than 30 countries.
Keller holds an undergraduate degree in economics from Princeton University, and an MBA from the University of Chicago. He currently is a director of Nicor Inc., chairman of the Board of Trustees of the African Wildlife Foundation, vice chairman of the Chicago Zoological Society at Brookfield Zoo, and a member of the Boards of Trustees of the University of Chicago, Princeton University, and the Mpala Wildlife Foundation.